title: 4'-Acetyl-3''-carbamoyl-[1,1':3',1''-terphen-yl]-2-carb-oxy-lic acid.
abstract: In the title m-terphenyl derivative, C22H17NO4, the dihedral angles between the aromatic rings of the benzoic acid-acetophenone, acetophenone-benzamide and benzoic acid-benzamide units are 45.39 (8), 48.02 (8) and 42.93 (8)°, respectively. The carbamoyl and carboxyl groups are disordered with a refined occupancy ratio of 0.558 (15):0.442 (15). In the crystal, mol-ecules are linked through O-H⋯O and N-H⋯O hydrogen bonds between terminal carboxyl and carbamoyl groups in a bidentate manner, and anti-parallel helices are formed which extend along the b-axis direction.
authors.affiliation: School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Ishikawa
authors.forename: Nanako
authors.initials: N
authors.lastname: Yoshida
authors.forename: Takafumi
authors.initials: T
authors.lastname: Suzuki